Automatic sand classifying and carrying equipment for semiconductors and solar quartz crucibles

Abstract

The invention provides automatic sand classifying and carrying equipment for semiconductors and solar quartz crucibles. The automatic sand classifying and carrying equipment comprises a classifying and lifting mechanism, a classifying and rotating mechanism and at least two sand charging barrels, under the combined action of the classification lifting mechanism and the classification rotating mechanism, the sand charging barrel can rotate and lift at a preset original point; the discharging position of each sand using material barrel is connected with a sand using material distributing assembly, and each sand using material distributing assembly comprises a classifying material barrel opening and closing valve used for controlling the opening degree of the discharging position of the corresponding sand using material barrel. According to the automatic classifying and carrying equipment, the premise requirement for automation of quartz crucible production can be met, and the quartz sand adding precision and cleanliness are improved.

Description

Technical Field

[0001] The invention belongs to the field of photovoltaics and semiconductors, and in particular relates to an automatic classification and conveying device for sand used in semiconductor and solar quartz crucibles. Background Art

[0002] Quartz crucible is a subdivided product of quartz glass products. It is made of high-purity quartz sand through mold shaping and high-temperature production using the arc method. It has the characteristics of high temperature resistance, long service life, and high purity. Quartz crucible is mainly used as an auxiliary consumable for the drawing of high-purity single crystal silicon rods for semiconductors. It is a key disposable consumable for containing molten silicon liquid during the drawing process of single crystal silicon rods. According to the downstream application scenarios of single crystal silicon rods, quartz crucibles can be divided into quartz crucibles for semiconductor single crystal silicon growth (semiconductor quartz crucibles and photovoltaic single crystal silicon growth quartz crucibles). In recent years, with the vigorous development of the photovoltaic and semiconductor industries, the demand for the output of quartz crucibles has also increased year by year, and at the same time, higher requirements are placed on the quality of quartz crucibles and their production processes.

[0003] The quartz crucible needs to be stacked with quartz sand of different qualities in each layer under high temperature. The quality of the added quartz sand also varies. The location and stacking method of the added quartz sand will also vary due to the different shapes of the inner wall and bottom of the quartz crucible. Due to this complex process requirement, the existing quartz crucible production method on the market is generally purely manual.

[0004] Workers work continuously and with high concentration in a high-temperature environment to prevent processing errors, environmental impurities and other problems. For example, if impurities fall into the crucible during processing or the thickness is uneven during the stacking process, the entire quartz crucible will become scrapped. The current market price of quartz sand is expensive, and the scrap rate increases, which in turn increases the cost of the entire quartz crucible and cannot meet the market's positioning requirements for quartz crucibles.

[0005] Therefore, how to continuously add preset quantities of quartz sand of different qualities during the quartz crucible manufacturing process is the primary problem to be solved in improving the automated manufacturing of quartz crucibles. Summary of the invention

[0006] In view of this, the invention aims to provide an automatic classification and transportation device for semiconductor and solar quartz crucible sand to solve the problem of mechanical replacement and adding materials of different qualities according to preset.

[0007] To achieve the above object, the technical solution created by the present invention is implemented as follows:

[0008] An automatic classification and transportation device for semiconductor and solar quartz crucible sand, comprising a classification lifting mechanism, a classification rotating mechanism and at least two sand barrels;

[0009] The classification lifting mechanism and the classification rotating mechanism work together to enable the sand barrel to rotate and lift at a preset origin;

[0010] Each sand material barrel outlet is connected to a useful sand material dividing assembly, and the sand material dividing assembly comprises a classification barrel opening and closing valve for controlling the opening and closing degree of the sand material barrel outlet.

[0011] Further, the classification rotating mechanism is connected to the classification lifting mechanism, and the sand material barrel is connected to the classification rotating mechanism and performs rotational motion relative to the classification lifting mechanism through the classification rotating mechanism; or,

[0012] The classification lifting mechanism is connected to the classification rotating mechanism, the sand material barrel is connected to the classification lifting mechanism, and the classification rotating mechanism makes the classification lifting mechanism rotate around a preset origin, and the sand material barrel moves with the classification lifting mechanism;

[0013] The classification lifting mechanism enables the sand material barrel to move up and down relative to a preset origin.

[0014] Furthermore, the discharge port of the sand barrel is connected to the outside through a classification barrel discharge pipe, and the classification barrel opening and closing valve includes a baffle and a baffle movement mechanism. The baffle movement mechanism causes the baffle to be displaced relative to the pipe mouth of the classification barrel discharge pipe. One extreme position of the displacement of the baffle is to be completely away from the pipe mouth of the classification barrel discharge pipe, and the other extreme position is to completely cover the pipe mouth of the classification barrel discharge pipe.

[0015] Furthermore, the sand material classification component also includes a classification barrel vibrator and a classification barrel blowing component;

[0016] The classification barrel vibrator is installed at the discharge of the sand barrel to generate vibration at the discharge of the sand barrel;

[0017] The air blowing component of the classification barrel comprises an air blowing pipe and an air generator. One end of the air blowing pipe is connected to the air generator, and the other end is connected to the discharge point of the sand barrel.

[0018] Furthermore, it also includes a classification valve group protective cover, which is fixed at the discharge point of the classification barrel and wraps the classification barrel opening and closing valve, the classification barrel vibrator, and the blowing pipeline in the classification barrel blowing component.

[0019] Furthermore, the discharge port of the sand barrel is connected to the outside through a classification barrel discharge pipe, and the classification barrel opening and closing valve includes a baffle and a baffle movement mechanism;

[0020] A graduation groove is provided in the middle of the discharge pipe of the classification barrel, and the graduation groove is adapted to the baffle;

[0021] The baffle plate is displaced relative to the indexing groove by the baffle plate movement mechanism. One extreme position of the baffle plate displacement is to be completely away from the indexing groove and to make the nozzle of the discharge pipe of the classification barrel connected with the outside world. Another extreme position is to be completely inserted into the indexing groove and to isolate the discharge pipe of the classification barrel from the outside world.

[0022] The baffle plate and the indexing groove are covered outside in the valve housing of the classification barrel opening and closing valve; the classification barrel opening and closing valve is installed on the classification barrel discharge installation plate;

[0023] The classification barrel discharge mounting plate is provided with a classification barrel blowing hole, an air generator is connected with the classification barrel discharge pipe through the classification barrel blowing hole, and the air blown by the air generator can act on the inside of the classification barrel discharge pipe.

[0024] Furthermore, the classification rotation mechanism includes a classification rotation servo motor and a classification rotation external gear bearing; the classification rotation external gear bearing has an outer ring with a circle of meshing teeth, and the inner ring is fixed on the classification rotation fixed seat, the output end of the classification rotation servo motor is connected to the classification rotation driving teeth, and the classification rotation driving teeth are meshed with the outer ring of the classification rotation external gear bearing;

[0025] The sand material barrel is connected to the outer ring of the classification rotating external gear bearing, and the classification rotating fixed seat is connected to the classification lifting mechanism;

[0026] Alternatively, the classification lifting mechanism is connected to the outer ring of the classification rotating external gear bearing, the classification rotating fixed seat is fixed at a preset position, and the sand barrel is connected to the classification lifting mechanism in a liftable manner.

[0027] Furthermore, a classified rotation limiter is provided on the outer ring of the classified rotation external gear bearing, which is used to limit the rotation position of the classified rotation external gear bearing, and this can be achieved by using a limit sensor or a mechanical blocking structure.

[0028] Furthermore, the classification lifting mechanism includes a classification lifting bracket, a classification lifting servo motor and a classification lifting driving rack;

[0029] The classification lifting driving rack is fixed on the classification lifting bracket, the output end of the classification lifting servo motor is connected with the classification lifting gear, the classification lifting gear is meshed with the classification lifting rack, and the classification lifting servo motor is fixed on the classification lifting seat;

[0030] The classification lifting seat is provided with a classification rotating mechanism, and the classification rotating mechanism is connected with a sand material barrel;

[0031] Or, a sand barrel is installed on the classification lifting seat, and the classification lifting bracket is installed on the classification rotating mechanism.

[0032] Furthermore, classification V-shaped rollers are respectively arranged on both sides of the classification lifting seat, and classification V-shaped guide rails are respectively arranged on both sides of the classification lifting bracket, and the classification V-shaped rollers are rotatably arranged in the classification V-shaped guide rails.

[0033] Furthermore, a classification lifting locking hole is provided in the classification lifting bracket, and a classification lifting limit locking cylinder is provided on the classification lifting seat. The output end of the classification lifting limit locking cylinder is connected to a locking piece, and the locking piece is plugged into the classification lifting locking hole.

[0034] Furthermore, the classification lifting bracket is fixed at a preset position through a classification lifting base, and a classification column auxiliary support leg is added to the lower side of the classification lifting bracket to form the classification lifting bracket into a stable triangle shape and fix it at the preset position.

[0035] Furthermore, a classification lifting anti-fall device is provided above the classification lifting bracket, and the classification lifting anti-fall device is equivalent to a structure for preventing falling in an elevator.

[0036] Furthermore, the sand barrel, the classification barrel opening and closing valve, and the classification barrel discharge pipe are all made of 304 grade or above stainless steel to prevent material contamination caused by rust, or quartz sand material, even if there are tiny impurities falling, it will not cause material contamination.

[0037] Compared with the prior art, the automatic classification and handling equipment for semiconductor and solar quartz crucible sand created by the present invention has the following advantages:

[0038] (1) The multiple rotatable and elevating sand barrels of the present invention can meet the needs of adding materials of different qualities, and at the same time, the purpose of automatically adding sand is achieved through the mechanical structure. Combined with the cleanliness requirements of the quartz crucible during the processing, different sand barrels can reduce the contamination between materials of different qualities. The classification barrel opening and closing valve is used to control the amount of sand barrel falling, which also meets the requirement of accurately controlling the amount of sand falling. Not only does the mechanical design realize the automatic separation of quartz sand, but it also replaces the problems of low manual efficiency and the inability to ensure cleanliness and consistency.

[0039] (2) The structural design of the opening and closing valve of the classification barrel described in the present invention can meet the quantitative requirements of quartz sand blanking, and can control the opening and closing degree of blanking, thereby controlling the blanking speed, meeting the requirements for the subsequent quartz crucible processing technology.

[0040] (3) The classification barrel vibrator and classification barrel blowing components described in the present invention can further improve the accuracy and cleanliness requirements of blanking. Since quartz sand has a certain viscosity, "hanging on the wall" may occur during the blanking process. The smoothness of blanking can be improved by vibration. The added blowing part can assist the vibration to ensure the smoothness of blanking, and at the same time improve the cleanliness of blanking. The quartz sand added to the sand barrel later will not be mixed with the previous quartz sand, thereby improving the cleanliness and ensuring the quality of subsequent quartz crucible processing.

[0041] (4) The protective cover of the classification valve group described in the present invention can wrap the mechanical parts located around the blanking position, further ensuring the cleanliness of the quartz sand during the blanking process and meeting the prerequisite requirements for the automated production of quartz crucibles.

[0042] (5) The structural design of the classification rotation mechanism described in the present invention can not only satisfy the requirement that the sand material barrel can rotate along a preset origin, thereby achieving the purpose of loading materials at one place and unloading materials at another place, but also avoid the contamination problem caused by pouring materials into the sand material barrel at the unloading position; it can also minimize the coordination of spare parts due to the rotating structural design, thereby avoiding more pollution generated during the operation of parts.

[0043] (6) The structural design of the classification lifting mechanism described in the present invention and the structural coordination design avoid lifting and lowering jamming caused by excessive weight of materials in the sand barrel, and meet the requirements of lifting stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The drawings constituting part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0045] Figure 1 A schematic diagram of the cooperation between an automatic classification and transportation device for semiconductor and solar quartz crucible sand and a quartz crucible melting furnace mold according to an embodiment of the present invention;

[0046] Figure 2 A schematic diagram of an automatic classification and transportation device for semiconductor and solar quartz crucible sand according to an embodiment of the present invention;

[0047] Figure 3 A schematic diagram of a sand material barrel according to an embodiment of the present invention;

[0048] Figure 4 It is a schematic diagram of the installation of the classification barrel vibrator, the classification barrel blowing component and the sand barrel according to the embodiment of the present invention;

[0049] Figure 5A schematic diagram of a classification lifting mechanism according to an embodiment of the present invention;

[0050] Figure 6 for Figure 5 -Enlarged view of A;

[0051] Figure 7 A schematic diagram of a classification rotating mechanism according to an embodiment of the present invention;

[0052] Figure 8 A rear view of the classification rotating mechanism described in the embodiment of the present invention;

[0053] Fig. 9 A schematic diagram of an unknown relationship between the baffle of the classification barrel opening and closing valve and the classification barrel discharge pipe described in an embodiment of the present invention.

[0054] Description of reference numerals:

[0055] 1. Quartz crucible melting furnace mold; 2. Automatic classification and handling equipment for sand for quartz crucible; 21. Classification lifting mechanism; 211. Classification chain drag chain; 212. Classification lifting anti-fall device; 213. Classification lifting drive rack; 214. Classification lifting servo motor; 2141. Classification lifting drive gear; 215. Classification V-shaped roller; 216. Classification V-shaped guide rail; 217. Classification lifting limit locking cylinder; 218. Classification lifting locking hole; 219. Classification lifting bracket; 22. Classification rotating mechanism; 221. Classification rotating servo motor ; 222, classified rotation limiter; 223, classified rotation external gear bearing; 224, classified rotation drive gear; 225, classified rotation fixed seat; 23, sand barrel; 24, sand material dividing assembly; 241, classified valve group protective cover; 242, classified rotation limiter; 243, classified barrel vibrator; 244, classified barrel opening and closing valve; 2441, baffle; 245, classified barrel blowing hole; 246, classified barrel discharge pipe; 247, classified barrel discharge mounting plate; 25, classified lifting base; 26, classified column auxiliary support legs. DETAILED DESCRIPTION

[0056] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0057] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0058] In the description of the invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the invention can be understood according to specific circumstances.

[0059] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0060] like Figure 1 and 2 As shown, an automatic classification and transportation device 2 for semiconductor and solar quartz crucible sand includes a classification lifting mechanism 21, a classification rotating mechanism 22 and at least two sand barrels 23;

[0061] The classification lifting mechanism 21 and the classification rotating mechanism 22 work together to enable the sand barrel 23 to rotate and lift at a preset origin;

[0062] Each discharge port of the sand material barrel 23 is connected to a useful sand dividing assembly 24 , and the sand dividing assembly 24 includes a classification barrel opening and closing valve 244 for controlling the opening and closing degree of the discharge port of the sand material barrel 23 .

[0063] The sand barrel 23 needs to be moved to the vicinity of the quartz crucible melting furnace mold 1 through the classification rotating mechanism 22 and the classification lifting mechanism 21 to facilitate blanking or loading. Generally, a weighing process will be required before entering the mold, so a quartz crucible automatic feeding and shape and size control growth device may be added to accurately measure the weight and speed of the feeding. Of course, the patented equipment can also be used to directly add materials to the quartz crucible melting furnace mold 1, and selection can be made according to processing requirements.

[0064] The production of quartz crucibles is generally divided into different levels, and the added materials generally include secondary materials, outer layer materials, middle layer materials, inner layer materials, and fine powder materials; therefore, the sand barrel 23 can be set in quantity according to the type of materials, and the classification rotating structure is used to determine which type of material to be dropped.

[0065] Due to the requirement of automatic classification and unloading, as long as the sand material barrel 23 carrying the material can be rotated and lifted and displaced, the requirement can be met. Therefore, the classification rotating mechanism 22 and the classification lifting mechanism 21 can be divided into two installation modes. One is that the classification lifting mechanism 21 carries the sand material barrel 23 for lifting and is driven to rotate by the classification rotating mechanism 22. The other is that the classification lifting mechanism 21 drives the classification rotating mechanism 22 to lift and lower. The classification rotating mechanism 22 is connected to the sand material barrel 23, and the sand material barrel 23 can rotate according to the preset origin.

[0066] The specific installation structure is as follows:

[0067] 1. The classification rotating mechanism 22 is connected to the classification lifting mechanism 21, and the sand material barrel 23 is connected to the classification rotating mechanism 22 and the classification rotating mechanism 22 performs a rotational motion relative to the classification lifting mechanism 21;

[0068] 2. The classification lifting mechanism 21 is connected to the classification rotating mechanism 22, and the sand material tube 23 is connected to the classification lifting mechanism 21 and the classification rotating mechanism 22 makes the classification lifting mechanism 21 rotate around a preset origin, and the sand material tube 23 follows the classification lifting mechanism 21;

[0069] The classification lifting mechanism 21 enables the sand barrel 23 to move up and down relative to a preset origin.

[0070] Figure 5-8 The material distribution rotating mechanism is shown to be installed on the material distribution lifting mechanism, and the sand material barrel 23 is installed on the material distribution rotating mechanism;

[0071] The classification rotation mechanism 22 includes a classification rotation servo motor 221 and a classification rotation external tooth bearing 223; the classification rotation external tooth bearing 223 has an outer ring with a circle of meshing teeth, and the inner ring is fixed on the classification rotation fixed seat 225, the output end of the classification rotation servo motor 221 is connected to the classification rotation driving teeth 224, and the classification rotation driving teeth 224 are meshed with the outer ring of the classification rotation external tooth bearing 223;

[0072] The sand material barrel 23 is connected to the outer ring of the classification rotating external gear bearing 223, and the classification rotating fixed seat 225 is connected to the classification lifting mechanism 21;

[0073] Furthermore, a classification rotation limiter 222 is provided on the outer ring of the classification rotation external gear bearing 223, which is used to limit the rotation position of the classification rotation external gear bearing 223, and can be realized by selecting a limit sensor or a mechanical blocking structure. When the preset position that the corresponding sand material barrel 23 should reach is set, the classification rotation limiter 222 can prevent the sand material barrel 23 from rotating excessively, and can also play a role in limiting its corresponding position; of course, the main function of the sand material barrel 23 reaching a fixed position is achieved by controlling the classification rotation servo motor 221.

[0074] The classification lifting mechanism 21 includes a classification lifting bracket 219, a classification lifting servo motor 214 and a classification lifting driving rack 213;

[0075] The classification lifting driving rack 213 is fixed on the classification lifting bracket 219, the output end of the classification lifting servo motor 214 is connected to the classification lifting gear, the classification lifting gear is meshed with the classification lifting rack, and the classification lifting servo motor 214 is fixed on the classification lifting seat;

[0076] A classification rotating mechanism 22 is installed on the classification lifting seat, and a sand material cylinder 23 is connected to the classification rotating mechanism 22.

[0077] When the classification lifting mechanism 21 rotates with the classification rotating mechanism 22, the specific connection method is as follows:

[0078] The classification lifting mechanism 21 is connected to the outer ring of the classification rotating external tooth bearing 223 , the classification rotating fixed seat 225 is fixed at a preset position, and the sand material barrel 23 is connected to the classification lifting mechanism 21 in a lifting manner.

[0079] The sand material cylinder 23 is installed on the classification lifting seat, and the classification lifting bracket 219 is installed on the classification rotating mechanism 22.

[0080] Regardless of the connection method adopted by the classification lifting mechanism 21 and the classification rotating mechanism 22, classification V-shaped rollers 215 are provided on both sides of the classification lifting seat, and classification V-shaped guide rails 216 are provided on both sides of the classification lifting bracket 219, and the classification V-shaped rollers 215 are rollingly arranged in the classification V-shaped guide rails 216. The coordinated rolling of the classification V-shaped guide rails 216 and the classification V-shaped rollers 215 can play a guiding role for the classification lifting mechanism 21, thereby improving the stability of lifting and lowering, and at the same time, the V-shaped method can effectively reduce dust pollution of falling materials.

[0081] Furthermore, a classification lifting locking hole 218 is also provided in the classification lifting bracket 219, and a classification lifting limit locking cylinder 217 is also provided on the classification lifting seat. The output end of the classification lifting limit locking cylinder 217 is connected to a locking member, and the locking member is plugged into the classification lifting locking hole 218. When the classification lifting mechanism 21 rises to a preset position, the classification lifting limit locking cylinder 217 moves and causes the locking member to be inserted into the corresponding classification lifting locking hole 218, thereby fixing the position and improving the safety of the overall classification lifting mechanism 21. Therefore, more classification lifting locking holes 218 can be provided on the classification lifting bracket 219 to meet different travel requirements.

[0082] The classification lifting bracket 219 is fixed at a preset position by a classification lifting base 25, and a classification column auxiliary support leg 26 is added to the lower side of the classification lifting bracket 219 to form the classification lifting bracket 219 into a stable triangle shape and fix it at the preset position.

[0083] A classification lifting anti-fall device 212 is also provided above the classification lifting bracket 219, and the classification lifting anti-fall device 212 is equivalent to a structure for preventing falling in an elevator.

[0084] like Figure 3 , 4 9, a schematic diagram of the cooperation between the sand barrel 23 and the classification barrel opening and closing valve 244. The sand barrel 23 can be connected to the outside through the classification barrel discharge pipe 246, or it can be directly connected to the outside.

[0085] The classification barrel opening and closing valve 244 is used to control the opening and closing degree of the discharge of the sand barrel 23. The classification barrel opening and closing valve 244 here controls the opening and closing degree of the discharge of the sand barrel 23. There are many choices of valve bodies. You can choose a valve body with only opening and closing functions (only used to control the discharge of materials of different masses, and also to control the weight of the discharged materials). You can also choose a valve body with multiple gear openings. This valve body can control the size of the outlet of the discharge of the sand barrel 23 to the outside, so that the discharge speed can be further controlled. The specific valve body selected on the market can be gate valves, stop valves, butterfly valves, ball valves, etc.

[0086] In order to better match the size and position of the sand barrel 23, this patent innovates a valve body structure, which is as follows:

[0087] The discharge point of the sand barrel 23 is connected to the outside through a classification barrel discharge pipe 246. The classification barrel opening and closing valve 244 includes a baffle 2441 and a baffle 2441 movement mechanism. The baffle 2441 movement mechanism causes the baffle 2441 to be displaced relative to the pipe mouth of the classification barrel discharge pipe 246. One extreme position of the displacement of the baffle 2441 is to be completely away from the pipe mouth of the classification barrel discharge pipe 246, and the other extreme position is to completely cover the pipe mouth of the classification barrel discharge pipe.

[0088] Or, a graduation groove is provided in the middle of the classification barrel discharge pipe 246, and the graduation groove is adapted to the baffle 2441;

[0089] The baffle 2441 is displaced relative to the indexing groove by the movement mechanism of the baffle 2441. One extreme position of the displacement of the baffle 2441 is to be completely away from the indexing groove and to make the nozzle of the discharge pipe 246 of the classification barrel communicate with the outside world. Another extreme position is to be completely inserted into the indexing groove and to isolate the discharge pipe 246 of the classification barrel from being connected with the outside world.

[0090] The baffle plate 2441 and the outer portion of the indexing groove are covered in the valve housing of the classification barrel opening and closing valve 244; the classification barrel opening and closing valve 244 is installed on the classification barrel discharge mounting plate 247;

[0091] The classification barrel discharge mounting plate 247 is provided with a classification barrel blowing hole 245, and an air generator is connected to the classification barrel discharge pipe 246 through the classification barrel blowing hole 245, and the air blown by the air generator can act on the inside of the classification barrel discharge pipe 246. The air generator can also be directly connected to the classification barrel discharge through an air pipe. The air is blown into the classification barrel discharge pipe 246 or the outlet of the sand barrel 23 by the air generator. Whether it is the nozzle of the classification barrel discharge pipe 246 or the outlet of the sand barrel 23, it can be called the blanking outlet, that is, the part connected to the external environment. The classification barrel discharge pipe 246 or the outlet of the sand barrel 23 are both funnel-designed, which is convenient for discharge.

[0092] The movement mechanism of the baffle 2441 can be a servo electric cylinder or a pneumatic cylinder, as long as the running trajectory can be controlled, so that the baffle 2441 can stay at the preset position at any time as needed.

[0093] Furthermore, the sand-classifying assembly 24 further includes a classifying barrel vibrator 243 and a classifying barrel blowing component;

[0094] The classification barrel vibrator 243 is installed at the discharge point of the sand barrel 23 to generate vibration at the discharge point of the sand barrel 23;

[0095] The blowing component of the classification barrel comprises a blowing pipe and an air generator, one end of the blowing pipe is connected to the air generator, and the other end is connected to the discharge point of the sand barrel 23.

[0096] It also includes a classification valve group protective cover 241, which is fixed at the discharge of the classification barrel and covers the classification barrel opening and closing valve 244, the classification barrel vibrator 243, and the blowing pipeline in the classification barrel blowing component, so as to prevent the moving parts from generating pollutants and falling into the quartz sand.

[0097] Furthermore, the sand barrel 23, the classification barrel opening and closing valve 244, and the classification barrel discharge pipe 246 are all made of 304 grade or higher stainless steel to prevent material contamination caused by rust, or quartz sand material, even if there are tiny impurities falling, it will not cause material contamination.

[0098] Working principle: (Take the classification rotating mechanism 22 installed on the classification lifting mechanism 21 as an example)

[0099] A plurality of sand material barrels 23 are provided as required. Here, five sand material barrels 23 are taken as an example. The five sand material barrels 23 are installed together through a classification mounting plate. The classification mounting plate is installed on the classification rotating mechanism 22, specifically, on the outer shaft of the classification rotating external gear bearing 223;

[0100] The classification rotating fixed seat 225 in the classification rotating mechanism 22 is connected to the classification lifting seat, and the classification lifting seat is fixed to the classification lifting servo motor 214. Through the rotation of the classification lifting servo motor 214, the classification rotating mechanism 22 can move vertically on the classification lifting bracket 219;

[0101] First, the sand barrel 23 is lowered to a position that can be reached by a person or a machine through the classification lifting mechanism 21. After the person or machine adds quartz sand of corresponding quality into each sand barrel 23, the sand barrel 23 rises to a preset position, and the classification rotation servo motor 221 in the classification rotation mechanism 22 is started to rotate the sand barrel 23. Which sand barrel 23 needs to rotate to the corresponding position can be controlled by the classification rotation servo motor 221.

[0102] Then, the classification barrel opening and closing valve 244 is started to control the opening and closing of the valve body to cooperate with the blanking of the sand barrel 23. If the valve body of the invention is used, the size of the blanking opening can be controlled by controlling the movement mechanism of the baffle 2441, thereby controlling the blanking speed;

[0103] During this period, the classification barrel vibrator 243 and the air generator are turned on so that there is always a sense of vibration and air blown out at the material drop position to prevent the material station from being attached to the outlet of the drop.

[0104] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic sorting and transporting device for semiconductor and solar quartz crucible sand, characterized by: It includes a classification lifting mechanism, a classification rotating mechanism and at least two sand barrels; The classification lifting mechanism and the classification rotating mechanism work together to enable the sand barrel to rotate and lift at a preset origin; Each sand material barrel outlet is connected to a useful sand material dividing assembly, and the sand material dividing assembly comprises a classification barrel opening and closing valve for controlling the opening and closing degree of the sand material barrel outlet.

2. The automatic sorting and transporting equipment for semiconductor and solar quartz crucible sand according to claim 1 is characterized in that: The classification rotating mechanism is connected to the classification lifting mechanism, and the sand barrel is connected to the classification rotating mechanism and performs rotational motion relative to the classification lifting mechanism through the classification rotating mechanism; or, The classification lifting mechanism is connected to the classification rotating mechanism, the sand material barrel is connected to the classification lifting mechanism, and the classification rotating mechanism makes the classification lifting mechanism rotate around a preset origin, and the sand material barrel moves with the classification lifting mechanism; The classification lifting mechanism enables the sand material barrel to move up and down relative to a preset origin.

3. The automatic sorting and transporting equipment for semiconductor and solar quartz crucible sand according to claim 1 is characterized in that: The sand material classification component also includes a classification barrel vibrator and a classification barrel blowing component; The classification barrel vibrator is installed at the discharge of the sand barrel to generate vibration at the discharge of the sand barrel; The air blowing component of the classification barrel comprises an air blowing pipe and an air generator. One end of the air blowing pipe is connected to the air generator, and the other end is connected to the discharge point of the sand barrel.

4. The automatic sorting and transporting equipment for semiconductor and solar quartz crucible sand according to claim 1 is characterized in that: The sand material classification component also includes a classification barrel vibrator and a classification barrel blowing component; The classification barrel vibrator is installed at the discharge of the sand barrel to generate vibration at the discharge of the sand barrel; The air blowing component of the classification barrel comprises an air blowing pipe and an air generator. One end of the air blowing pipe is connected to the air generator, and the other end is connected to the discharge point of the sand barrel.

5. The automatic classification and transportation equipment for semiconductor and solar quartz crucible sand according to claim 4 is characterized in that: It also includes a classification valve group protective cover, which is fixed at the discharge of the classification barrel and wraps the classification barrel opening and closing valve, the classification barrel vibrator, and the blowing pipeline in the classification barrel blowing component.

6. The automatic classification and transportation equipment for semiconductor and solar quartz crucible sand according to claim 1, characterized in that: The discharge port of the sand barrel is connected to the outside through a discharge pipe of the classification barrel, and the classification barrel opening and closing valve includes a baffle and a baffle movement mechanism; A graduation groove is provided in the middle of the discharge pipe of the classification barrel, and the graduation groove is adapted to the baffle; The baffle plate is displaced relative to the indexing groove by the baffle plate movement mechanism. One extreme position of the baffle plate displacement is to be completely away from the indexing groove and to make the nozzle of the discharge pipe of the classification barrel connected with the outside world. Another extreme position is to be completely inserted into the indexing groove and to isolate the discharge pipe of the classification barrel from the outside world. The baffle plate and the indexing groove are covered outside in the valve housing of the classification barrel opening and closing valve; the classification barrel opening and closing valve is installed on the classification barrel discharge installation plate; The classification barrel discharge mounting plate is provided with a classification barrel blowing hole, an air generator is connected with the classification barrel discharge pipe through the classification barrel blowing hole, and the air blown by the air generator can act on the inside of the classification barrel discharge pipe.

7. The automatic sorting and transporting equipment for semiconductor and solar quartz crucible sand according to claim 1 is characterized by: The classification rotation mechanism comprises a classification rotation servo motor and a classification rotation external gear bearing; the classification rotation external gear bearing has an outer ring with a circle of meshing teeth, and the inner ring is fixed on a classification rotation fixed seat, the output end of the classification rotation servo motor is connected to the classification rotation driving teeth, and the classification rotation driving teeth mesh with the outer ring of the classification rotation external gear bearing; The sand material barrel is connected to the outer ring of the classification rotating external gear bearing, and the classification rotating fixed seat is connected to the classification lifting mechanism; Alternatively, the classification lifting mechanism is connected to the outer ring of the classification rotating external gear bearing, the classification rotating fixed seat is fixed at a preset position, and the sand barrel is connected to the classification lifting mechanism in a liftable manner.

8. The automatic sorting and transporting equipment for semiconductor and solar quartz crucible sand according to claim 1 is characterized by: The classification lifting mechanism comprises a classification lifting bracket, a classification lifting servo motor and a classification lifting driving rack; The classification lifting driving rack is fixed on the classification lifting bracket, the output end of the classification lifting servo motor is connected with the classification lifting gear, the classification lifting gear is meshed with the classification lifting rack, and the classification lifting servo motor is fixed on the classification lifting seat; The classification lifting seat is provided with a classification rotating mechanism, and the classification rotating mechanism is connected with a sand material barrel; Or, a sand barrel is installed on the classification lifting seat, and the classification lifting bracket is installed on the classification rotating mechanism.

9. The automatic classification and transportation equipment for semiconductor and solar quartz crucible sand according to claim 8, characterized in that: Classification V-shaped rollers are arranged on both sides of the classification lifting seat, and classification V-shaped guide rails are arranged on both sides of the classification lifting bracket. The classification V-shaped rollers are rotatably arranged in the classification V-shaped guide rails.

10. The automatic classification and transportation equipment for semiconductor and solar quartz crucible sand according to claim 8 or 9, characterized in that: The classification lifting bracket is also provided with a classification lifting locking hole, and the classification lifting seat is also provided with a classification lifting limit locking cylinder. The output end of the classification lifting limit locking cylinder is connected with a locking piece, and the locking piece is plugged into and matched with the classification lifting locking hole.

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